In how many reflows do we do those computations ?

Ideally it should be only one reflow. Since we do this kind of operations in 2 steps, first changing the size of the text, and then centering it around, I feel like we are doing more. Do you know how many reflows happens for 1 text change ?

I would like to see if we can optimize that to have only 1, and then have a test with the ReflowHelper.